Patents Assigned to Siliconfile Technologies Inc.
  • Publication number: 20090135283
    Abstract: Provided is a pixel array structure and of a complementary metal-oxide-semiconductor (CMOS) image sensor and a method of arranging the same in which unit pixels are arranged diagonally to adjacent unit pixels in a row and column direction. For the arrangement, a pixel array in even rows is shifted to a half of a pitch in a column direction with respect to a pixel array in odd rows. Accordingly, in a pixel array implemented in a diagonal pattern, a distance between optical sensing elements can be larger, so that optical sensing elements with larger regions can be obtained. In addition, pixel transistor circuit units constructed with MOS transistors can be arranged between the optical sensing elements, so that a photo sensitivity and a resolution can be markedly increased.
    Type: Application
    Filed: March 14, 2007
    Publication date: May 28, 2009
    Applicant: SILICONFILE TECHNOLOGIES INC.
    Inventor: Do Young LEE
  • Publication number: 20090058993
    Abstract: A CMOS stereo camera for obtaining a three-dimensional image, in which two CMOS image sensors having the same characteristics are disposed on a single semiconductor substrate, is provided. The CMOS image sensors have image planes which are located on the same plane by disposing the two CMOS image sensors on the same semiconductor substrate. A digital signal processor (DSP) for processing a three-dimensional image is disposed between the CMOS image sensors. Optical axes of the CMOS image sensors are parallel with each other and orthogonal to the image planes. Since optical devices formed on the CMOS image sensors can be manufactured through the same processes, distortion of the optical axes between the two CMOS image sensors can be minimized.
    Type: Application
    Filed: February 7, 2007
    Publication date: March 5, 2009
    Applicant: SILICONFILE TECHNOLOGIES INC.
    Inventors: Byoung Su Lee, Jun Ho Won
  • Publication number: 20090014761
    Abstract: Provided is an image sensor pixel in which a specific or entire area of a field oxide layer inside the pixel can be used as a photodiode so as to increase a fill factor, and a fabrication method thereof. The image sensor pixel includes: a photodiode which is buried inside a semiconductor substrate; and pixel transistors which are formed after the photodiode is formed. In addition, the image sensor pixel includes: pixel transistors; a field oxide layer which separates the pixel transistors; and a photodiode which is located at the lower portion in a specific or entire area of the field oxide layer. In addition, the fabrication method includes: (a) forming a trench region in a specific area of a semiconductor substrate; (b) forming a photodiode which includes at least a portion of the trench region; and (c) forming pixel transistor, after the photodiode is formed. Accordingly, a surface area of a photodiode increases, thereby improving a fill factor and photosensitivity.
    Type: Application
    Filed: June 14, 2006
    Publication date: January 15, 2009
    Applicants: SILICONFILE TECHNOLOGIES INC.
    Inventor: Cheol Soo Park
  • Publication number: 20090008737
    Abstract: Provided is an image sensor and a method of manufacturing the same. The image sensor includes anti-reflection films which are formed between a plurality of metal wire lines of the lowest metal wiring layer and a semiconductor substrate and between one of the metal wiring layers and another metal wiring layer. The image sensor having the anti-reflection films according to the present invention can reduce color crosstalk and noises in comparison with a conventional image sensor by using the anti-reflection films formed above the surroundings of the photodiodes.
    Type: Application
    Filed: December 7, 2006
    Publication date: January 8, 2009
    Applicant: SILICONFILE TECHNOLOGIES INC.
    Inventors: Jun Ho Won, Se Jung Oh, Jae Young Rim, Byoung Su Lee
  • Publication number: 20080304154
    Abstract: The present invention relates to a voice coil module (VCM), and more particularly, to a VCM used for lens fixation and displacement measurement in order to prevent and control power consumption. Accordingly, in the VCM, power is not additionally consumed in order to maintain a specific position of the lens in a state that a focus of the lens is adjusted. Further, the lens is not moved and an optical axis is not distorted when a vibration occurs while an image is captured. Furthermore, the lens can be accurately controlled by measuring the present position of the lens.
    Type: Application
    Filed: January 9, 2007
    Publication date: December 11, 2008
    Applicant: SILICONFILE TECHNOLOGIES INC.
    Inventor: Byoung Su Lee
  • Publication number: 20080293184
    Abstract: A method of bonding aluminum (Al) electrodes formed on two semiconductor substrates at a low temperature that does not affect circuits formed on the two semiconductor substrates is provided. The method includes: (a) forming aluminum (Al) electrodes on the two semiconductor substrates, respectively, and depositing a metal alloy that comprises aluminum (Al) and copper (Cu) onto the aluminum (Al) electrodes; (b) arranging the aluminum (Al) electrodes of the two semiconductor substrates to face with each other; and (c) heating the aluminum (Al) electrodes at a temperature lower than the melting point of the deposited metal alloy, and applying a specific pressure onto the two semiconductor substrates. Accordingly, bonding can be carried out at a temperature lower than the melting point of an Al0.83Cu0.17 alloy without having an effect on circuits formed on two semiconductor substrates, and can be selectively carried out at regions where pressure is applied.
    Type: Application
    Filed: March 2, 2006
    Publication date: November 27, 2008
    Applicant: SILICONFILE TECHNOLOGIES INC.
    Inventor: Byoung Su Lee
  • Publication number: 20080251823
    Abstract: A separation type unit pixel of an image sensor, which can handle light that incidents onto a photodiode at various angles, and provides a zoom function in a mini camera module by securing an incident angle margin, and a manufacturing method thereof are provided. The separation type unit pixel having a 3 D structure for an image sensor, composed of a plurality of transistors, includes: a first wafer which includes a photodiode, a transfer transistor, a node of a floating diffusion area functioning as static electricity for converting electric charge into a voltage, and a pad connecting the floating diffusion area and the transfer transistor to an external circuit, respectively; a second wafer which includes the rest of the circuit elements constituting a pixel (i.e.
    Type: Application
    Filed: March 29, 2006
    Publication date: October 16, 2008
    Applicant: SILICONFILE TECHNOLOGIES INC.
    Inventor: Do Young Lee
  • Publication number: 20080224187
    Abstract: A new structure of a photodiode of a pixel in CMOS image sensor and a method of fabricating the same are provided. The photodiode is fabricated by using one photo mask, so that the number of masks decreases and the fabrication processes are simplified. In addition, two conducting layers constituting a photodiode are self-aligned, so that a fabrication process for connecting the photodiode and a transfer transistor is not required. Accordingly, a problem of channeling generated in a lower portion of a gate of the transfer transistor can be solved, so that an improved pixel can be fabricated.
    Type: Application
    Filed: August 11, 2006
    Publication date: September 18, 2008
    Applicants: SILICONFILE TECHNOLOGIES INC.
    Inventors: Cheol Soo Park, Do Young Lee
  • Publication number: 20080158671
    Abstract: A three-dimensional image display apparatus using a flat panel display unit is provided. The three-dimensional image display apparatus includes a flat panel display unit, reflecting plate arrays reflecting incident light, and a vibrator vibrating the reflecting plate arrays from left to right or from right to left, wherein the reflecting plate arrays are moved according to time by an vibration of the vibrator, and wherein a three-dimensional image is displayed by changing an image of the flat panel display unit based on an angle of the reflecting plate arrays. The three-dimensional image display apparatus has advantages that no auxiliary apparatuses such as special glasses are required to recognize the three-dimensional image, and that has no deterioration of an image quality, which is the biggest drawback of a general three-dimensional image display apparatus, and that observation of a three-dimensional image is not limited to one person.
    Type: Application
    Filed: May 8, 2006
    Publication date: July 3, 2008
    Applicant: Siliconfile Technologies Inc.
    Inventor: Byoung Su Lee